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    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
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    <h1>Watching block numbers and blocks</h1>
    <div id ="block-number">Waiting for block number...</div>
    <div id ="block">Waiting for block...</div>
    <script type="module" src="./index.ts"></script>
  </body>
</html>
